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Novel Two-Dimensional (2-D) Defected Ground Array for Planar Circuits
Haiwen Liu
,1,2
Xiaowei Sun,2
and
Zhengfan Li1
1Department of Electronic Engineering, Shanghai Jiaotong University, P.O. Box 006, No. 1954, Huashan Rd., China
2Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, China
Abstract
This paper presents a novel two-dimensional (2-D) defected ground array (DGA) for planar circuits, which has horizontal and vertical periodicities of defect structure. The defected unit cell of DGA is composed of a Sierpinski carpet structure to improve the effective inductance. Measurements show that the proposed DGA provides steeper cutoff characteristics, lower cutoff frequency, and higher slow-wave factors than the conventional periodic defected ground structure in the same occupied surface.
Copyright
Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under theCreative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
